Recover from shutdown timeout in tryRestart (#3602)

Co-authored-by: ekazakov14 <yarnstart@yandex-team.ru>

Author: ekazakov14

_extension/src/client.ts

@@ -278,7 +278,13 @@ export class Client implements vscode.Disposable {
 
         this.isInitialized = false;
         this.outputChannel.appendLine(`Restarting language server...`);
-        await this.client.restart();
+        try {
+            await this.client.restart();
+        }
+        catch (err) {
+            this.outputChannel.appendLine(`Graceful shutdown failed, forcing restart: ${err}`);
+            await this.client.start();
+        }
         return true;
     }